Sami Ur Rahman, Yong-Hui Song, Zhen-Yu Ma, Xiao-Lin Tai, Bai-Sheng Zhu, Yi-Chen Yin, Li-Zhe Feng, Jing-Ming Hao, Guan-Jie Ding, Kuang-Hui Song, Ya-Lan Hu, Tieqiang Li, Jixian Xu, Hong-Bin Yao
{"title":"高效PbS量子点太阳能电池用CsPbI2Br外延壳","authors":"Sami Ur Rahman, Yong-Hui Song, Zhen-Yu Ma, Xiao-Lin Tai, Bai-Sheng Zhu, Yi-Chen Yin, Li-Zhe Feng, Jing-Ming Hao, Guan-Jie Ding, Kuang-Hui Song, Ya-Lan Hu, Tieqiang Li, Jixian Xu, Hong-Bin Yao","doi":"10.1007/s12274-024-6988-4","DOIUrl":null,"url":null,"abstract":"<div><p>Lead sulfide quantum dots (PbS QDs) are promising candidates for high-performance solar cells due to their tunable bandgaps and low-cost solution processing. However, low carrier mobility and numerous surface defects restrict the performance of the fabricated solar cells. Herein, we report the synthesis of novel PbS-perovskite core-shell QDs to solve the low carrier mobility problem of PbS QDs via a facile hot injection method. CsPbI<sub>2</sub>Br shell enabled strain-free epitaxial growth on the surface of PbS QDs because of 98% lattice match. Our results demonstrate a significant improvement in the photoluminescence and stability of the synthesized PbS-CsPbI<sub>2</sub>Br QDs upon shell formation, attributed to the effective suppression of surface defects by the epitaxial shell of CsPbI<sub>2</sub>Br. As a result, the obtained solar cell based on PbS-CsPbI<sub>2</sub>Br core-shell QD exhibits a power conversion efficiency (PCE) of 8.43%, two times higher than that of pristine PbS QDs. Overall, the construction of PbS-CsPbI<sub>2</sub>Br core-shell structures represent a promising strategy for advancing the performance of PbS QDs-based optoelectronic devices.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":713,"journal":{"name":"Nano Research","volume":"17 :","pages":"10302 - 10308"},"PeriodicalIF":9.0000,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"CsPbI2Br epitaxial shell for efficient PbS quantum dot solar cells\",\"authors\":\"Sami Ur Rahman, Yong-Hui Song, Zhen-Yu Ma, Xiao-Lin Tai, Bai-Sheng Zhu, Yi-Chen Yin, Li-Zhe Feng, Jing-Ming Hao, Guan-Jie Ding, Kuang-Hui Song, Ya-Lan Hu, Tieqiang Li, Jixian Xu, Hong-Bin Yao\",\"doi\":\"10.1007/s12274-024-6988-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Lead sulfide quantum dots (PbS QDs) are promising candidates for high-performance solar cells due to their tunable bandgaps and low-cost solution processing. However, low carrier mobility and numerous surface defects restrict the performance of the fabricated solar cells. Herein, we report the synthesis of novel PbS-perovskite core-shell QDs to solve the low carrier mobility problem of PbS QDs via a facile hot injection method. CsPbI<sub>2</sub>Br shell enabled strain-free epitaxial growth on the surface of PbS QDs because of 98% lattice match. Our results demonstrate a significant improvement in the photoluminescence and stability of the synthesized PbS-CsPbI<sub>2</sub>Br QDs upon shell formation, attributed to the effective suppression of surface defects by the epitaxial shell of CsPbI<sub>2</sub>Br. As a result, the obtained solar cell based on PbS-CsPbI<sub>2</sub>Br core-shell QD exhibits a power conversion efficiency (PCE) of 8.43%, two times higher than that of pristine PbS QDs. Overall, the construction of PbS-CsPbI<sub>2</sub>Br core-shell structures represent a promising strategy for advancing the performance of PbS QDs-based optoelectronic devices.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":713,\"journal\":{\"name\":\"Nano Research\",\"volume\":\"17 :\",\"pages\":\"10302 - 10308\"},\"PeriodicalIF\":9.0000,\"publicationDate\":\"2024-11-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nano Research\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12274-024-6988-4\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano Research","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12274-024-6988-4","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
CsPbI2Br epitaxial shell for efficient PbS quantum dot solar cells
Lead sulfide quantum dots (PbS QDs) are promising candidates for high-performance solar cells due to their tunable bandgaps and low-cost solution processing. However, low carrier mobility and numerous surface defects restrict the performance of the fabricated solar cells. Herein, we report the synthesis of novel PbS-perovskite core-shell QDs to solve the low carrier mobility problem of PbS QDs via a facile hot injection method. CsPbI2Br shell enabled strain-free epitaxial growth on the surface of PbS QDs because of 98% lattice match. Our results demonstrate a significant improvement in the photoluminescence and stability of the synthesized PbS-CsPbI2Br QDs upon shell formation, attributed to the effective suppression of surface defects by the epitaxial shell of CsPbI2Br. As a result, the obtained solar cell based on PbS-CsPbI2Br core-shell QD exhibits a power conversion efficiency (PCE) of 8.43%, two times higher than that of pristine PbS QDs. Overall, the construction of PbS-CsPbI2Br core-shell structures represent a promising strategy for advancing the performance of PbS QDs-based optoelectronic devices.
期刊介绍:
Nano Research is a peer-reviewed, international and interdisciplinary research journal that focuses on all aspects of nanoscience and nanotechnology. It solicits submissions in various topical areas, from basic aspects of nanoscale materials to practical applications. The journal publishes articles on synthesis, characterization, and manipulation of nanomaterials; nanoscale physics, electrical transport, and quantum physics; scanning probe microscopy and spectroscopy; nanofluidics; nanosensors; nanoelectronics and molecular electronics; nano-optics, nano-optoelectronics, and nano-photonics; nanomagnetics; nanobiotechnology and nanomedicine; and nanoscale modeling and simulations. Nano Research offers readers a combination of authoritative and comprehensive Reviews, original cutting-edge research in Communication and Full Paper formats. The journal also prioritizes rapid review to ensure prompt publication.